Kobelco Construction Machinery Co., Ltd.

Yuichi Hoshino

Keiji Yamamoto

Isao Miyachi

Kenta Kojima

In the working machine of the present invention, a tank mounting portion is provided in an upper rotating body, a fuel tank is mounted removably in the tank mounting portion, and engaging portions are formed respectively on both body side of the working machine and the tank side so as to be engaged with each other when the tank is set in the tank mounting portion, thereby preventing in this engaged state the tank from moving in vertical directions and in substantially horizontal directions other than a removable direction of the tank, while a fuel tank dislodgment preventing means is provided to prevent movement in the removable direction of the tank when set in the tank mounting portion. In this working machine, the tank mounting structure can be reduced in both size and weight.

Working machine

A counterweight mounting structure for construction machine to which a counterweight is connected through a gap to an exterior constituting an upper rotating body is constituted such that a recessed groove is provided on an end on a connection side of the counterweight, an elastic soundproof material is installed in the recessed groove, and the soundproof material protruding from the recessed groove is brought in contact with, and pressed against an end on the connection side of the exterior when the counterweight is mounted. As a result, there is provided the counterweight mounting structure whose soundproof capability does not decrease even after the counterweight is mounted/dismounted.

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Hiroshima, Japan

Yuichi Hoshino